Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 247 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
2. 2.True or false: to record every result is poor testing. (a) False (b) True
3. 3.True or false: to measure the same way is good testing. (a) True (b) False
4. 4.🧪 A paper bridge was tested three times. It held 340 g, 310 g and 310 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design C (b) design B (c) design A
6. 6.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
7. 7.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
8. 8.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
9. 9.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 360 g. What is the mean (average) load it held, in grams?
10. 10.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) test it only once (d) change only one thing
11. 11.True or false: to hide a failed test is good testing. (a) True (b) False
12. 12.🧪 A paper bridge was tested three times. It held 260 g, 140 g and 140 g. What is the mean (average) load it held, in grams?
13. 13.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
14. 14.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
15. 15.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
16. 16.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
17. 17.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
18. 18.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
19. 19.True or false: to skip writing results is poor testing. (a) False (b) True
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
21. 21.True or false: to repeat each test is good testing. (a) False (b) True
22. 22.True or false: to guess, do not measure is poor testing. (a) True (b) False
23. 23.🧪 A paper bridge was tested three times. It held 320 g, 190 g and 360 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to record every result is good testing. (a) False (b) True
25. 25.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 390 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design C (b) design A (c) design B
27. 27.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 310 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
29. 29.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) sketch three ideas
30. 30.🧪 A paper bridge was tested three times. It held 360 g, 210 g and 210 g. What is the mean (average) load it held, in grams?
31. 31.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
32. 32.🧪 A paper bridge was tested three times. It held 270 g, 80 g and 160 g. What is the mean (average) load it held, in grams?
33. 33.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
34. 34.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
35. 35.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design B (b) design C (c) design A
37. 37.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
38. 38.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
39. 39.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
40. 40.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) build it with straws (c) load it with coins (d) sketch three ideas

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